| Ontario to Horizon West (Florida) | 2,149.81 mi (3,459.79 km) |
| Ontario to Hormigueros (Puerto Rico) | 3,283.30 mi (5,283.97 km) |
| Ontario to Horn Lake (Mississippi) | 1,565.49 mi (2,519.42 km) |
| Ontario to Hot Springs (Arkansas) | 1,399.11 mi (2,251.65 km) |
| Ontario to Hot Springs Village (Arkansas) | 1,402.86 mi (2,257.68 km) |
| Ontario to Houma (Louisiana) | 1,604.39 mi (2,582.01 km) |
| Ontario to Houston (Texas) | 1,332.93 mi (2,145.14 km) |
| Ontario to Howard (Wisconsin) | 1,725.02 mi (2,776.15 km) |
| Ontario to Huber Heights (Ohio) | 1,881.02 mi (3,027.21 km) |
| Ontario to Hudson (Florida) | 2,090.19 mi (3,363.83 km) |
| Ontario to Hudson (Ohio) | 2,024.60 mi (3,258.27 km) |
| Ontario to Hudson (Wisconsin) | 1,516.89 mi (2,441.20 km) |
| Ontario to Hueytown (Alabama) | 1,751.36 mi (2,818.54 km) |
| Ontario to Hugo (Minnesota) | 1,511.73 mi (2,432.89 km) |
| Ontario to Humacao (Puerto Rico) | 3,357.03 mi (5,402.62 km) |
